August Weather in Siletz, United States

Last updated: June 24, 2025

In August, the average temperature in Siletz, United States is a comfortable 15°C (59°F), with lows reaching 10°C (51°F) and highs soaring up to 25°C (76°F). You're likely to experience some rain, with 13 mm (0.5 in) of precipitation expected over 2 days. The average humidity level sits at a moderate 74%, making for a refreshing atmosphere.

August Temperature in Siletz

In August in Siletz, the average temperature is 15°C (59°F), with maximums reaching 25°C (76°F) and minimums dipping as low as 10°C (51°F). This makes it an ideal time for travelers to enjoy mild weather while exploring the sights of Siletz.

August Weather in Siletz: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Siletz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siletz, August typically has an average temperature of 15°C (59°F), with highs reaching up to 25°C (76°F) and lows dropping to around 10°C (51°F).

Data source: Temperature data for Siletz generated using information from the Copernicus Climate Change Service.

August Precipitation in Siletz

In Siletz in August, the precipitation amount is 13 mm (0.5 in) over a span of 2 days.

August Precipitation Trends in Siletz

The chart displays monthly precipitation patterns in Siletz, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Siletz, August typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Siletz

In Siletz in August, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

August Average Humidity in Siletz

This chart illustrates the average monthly humidity levels in Siletz, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Siletz is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Siletz

In Siletz in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Siletz.

Maximum UV Index Levels in Siletz for August

The chart shows the monthly maximum UV Index (UVI) for Siletz in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Siletz typically reaches 9, which falls under the very high exposure category.

Data source: Siletz August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Siletz Compares to Other Months

Weather in Siletz varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Siletz, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Siletz, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	271 mm (10.7 inches)	85%	low
February Weather	7°C (44°F)	248 mm (9.8 inches)	84%	moderate
March Weather	8°C (46°F)	191 mm (7.5 inches)	85%	high
April Weather	9°C (49°F)	158 mm (6.2 inches)	83%	high
May Weather	11°C (52°F)	74 mm (2.9 inches)	83%	very high
June Weather	13°C (56°F)	62 mm (2.4 inches)	83%	very high
July Weather	15°C (58°F)	9 mm (0.4 inches)	82%	very high
August Weather	15°C (59°F)	13 mm (0.5 inches)	74%	very high
September Weather	14°C (58°F)	71 mm (2.8 inches)	71%	high
October Weather	12°C (54°F)	151 mm (5.9 inches)	81%	moderate
November Weather	10°C (50°F)	254 mm (10.0 inches)	87%	moderate
December Weather	8°C (46°F)	292 mm (11.5 inches)	87%	low